Clarify error message in GCL.

gclient_utils.py

 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Generic utils."""
 
 import errno
 import logging
 import os
 import Queue
@@ skipping 693 matching lines @@
     else:
       editor = 'vim'
   return editor
 
 
 def RunEditor(content, git):
   """Opens up the default editor in the system to get the CL description."""
   file_handle, filename = tempfile.mkstemp(text=True)
   # Make sure CRLF is handled properly by requiring none.
   if '\r' in content:
-    print >> sys.stderr, ('!! Please remove \\r from your content !!')
+    print >> sys.stderr, (
+        '!! Please remove \\r from your change description !!')
   fileobj = os.fdopen(file_handle, 'w')
   # Still remove \r if present.
   fileobj.write(re.sub('\r?\n', '\n', content))
   fileobj.close()
 
   try:
     cmd = '%s %s' % (GetEditor(git), filename)
     if sys.platform == 'win32' and os.environ.get('TERM') == 'msys':
       # Msysgit requires the usage of 'env' to be present.
       cmd = 'env ' + cmd
     try:
       # shell=True to allow the shell to handle all forms of quotes in
       # $EDITOR.
       subprocess2.check_call(cmd, shell=True)
     except subprocess2.CalledProcessError:
       return None
     return FileRead(filename)
   finally:
     os.remove(filename)